Hydraulic printing and impressing or stamping press



7 July 1 9 1 932. I H. BRANDENBIIJRG 1,368,330

HYDRAULIC PRINTING AND IMPRESSING 0R STAMPING PRESS Filed April 22, 19302 Sheets-Sheet 1 [121 622 Z01: j erzmzzm firandel riazy jozyzey.

H. BRANDEN BURG 1,868,380

Filed April 22. 1930 2 Sheets-Sheet 2 if J27 2..

July 19, 1932.

I HYDRAULIC PRINTING AND IMPRESSING OR STAMPING PRESS fzzrezziazv farm Wfliz'orflef Patented July 19, 1932 UNITED STATES PATENT oer-Ice HERMANNBRANDENBUBG, 0F BERLIN, GERMANY, LSSIGNOB '10 JOSE]! GBUENBKBG AND F. A.SOHEU GIBELLSGHAFT MIT BESCHBAENKTER EAIIUNG, BOTH OF 13mm,

GEBEANY HYDRAULIC PRINTING AND IHPBESSING OB STAMPING PRESS Applicationfled April 28, 1930, Serial llo. 446,831, and in Germany Kay 6, 1929.

With hydraulic printing 'and'impressing or stamping presses in which theworking table with the work-piece thereon is lifted by means of a liquidunder pressure it is known.

to mount the pump for said 1i uid and the driving motor for this pumpreel in the upper or in the lower part of the rame of the press. Butowing to this arrangement the pump and the-motor are exposed to the dustpresent in the air and are covered with the same, and the possibilityexists that parts of the liquid under pressure, generally oil, flowsdown into the press or upon the workpiece, for instance a stereotypicmatrix, or soils the floor. Besides, the pump and the motor whenarranged as above stated disturb frequently the proper management of themachine, especially when they are located in the upper part of the same.

" The ob]ect of the present invention is to obviate these drawbacks, andin order to attain the purpose in view the bottom art of the'frame ofthe press is so designed t at the pump and the motor can be housed in aclosed said frame part. Another feature of the invention resides in thefollowing: It is suited to the proper operation of the press to obviate.long conduits or pipes for the liquid between the store vessel for thislatter and the pump, as.

well as between this pum and the cylinder in which the piston that is tolift. the press table is moving or reciprocating, and for this reasonsai vessel is arranged in the bottom part of the press frame in such amanner that it surrounds and encloses said cylinder whereby, at the sametime, much space is saved.

The space available in the bottom part of the press for housing the pumpand the motor for operating the pump is, of course, very restricted, andthere are, therefore, means provided rendering possible that housing insuch a manner that the secure and reliable operation of the machine isnot in the least impaired. This is, thus, another object of the presentinvention, and I attain the purpose here in view byconnecting the shaftof the .motor andthe pump gearing directly with For the same purpose thedriving shaft and the pump shaft are connected with one another by agearing having an internal toothing whereby very little space is needed.also for the speeding-down gearing. This gearin with its internaltoothing presents, besi'es, the further advantage that it can be usedfor conveying the oil present in the lower part of the pump casing to. areceptacle or basin located on a higher level from which the oil isdistributed onto the driving members and the shaft bearings of the pump,which members receive the oil from nozzles in the form of drops. Thisarrangement permits to dispense with a separate lubricating device.

The invention is illustrated dia rammatically and by way of example on te accompanying drawings on which Figure 1 is a vertical section througha printing and impressing or stampin%press designed according to l shortcolumns or-standar s connecting the parts 1 and 3 with one another. 4:is a cylinder in the lower part of the press, and 5 a piston which canbe moved up and down in said cylinder. Upon said piston is mounted theworking table 6 which is provided with lateral extensions 7. Thecylinder 4 is surrounded with an annular space or chamber 8 formed by ajacket 9 and containing.

the liquid (not shown) necessaryfor lifting the piston 5. In the lowerpart of the frame,

'below the table extensions 7, are two chambers 1 and 1*, of which inthe first is housed a casing 10 enclosing the pum 11 which is connectedwith the chamber 8 y a pipe 12, and with the cylinder 4 by a pi e 13.When the liquid is forced into said cylinder the pison Sand with it themembers 6 and 7 as lifted.

14 (Figs. 2 and 3) is the-main shaft of the pump to which is afiixed theinternally toothed cog-wheel 15 which meshes with a pinion 16 secured toa shaft 17 driven by an electromotor 18 also housed in the chamber 1 Theshaft 19 of this motor is connected with said shaft 17 by means of anelastic coupling id The pump shaft 14 is a cranked shaft. e pump hasthree pistons 23, and there/are, therefore, three cranks and threeconnecting rods 21 which reciprocate said pistons by the intermediary ofthe double armed levers 22.

Above said cranked pump shaft is provided an oil distributing basin 24.There is on the bottom of the. pump casin 10 such an amount of oil thatthe cog-w cal 15 dips thereinto, the oil being, therefore, carriedupwards by this wheel. A scraper 25 located inthe uppermost portion ofthe pump casing is so arranged relatively to the said cog-wheel and thebasin 24 that the oil carried upwards by the said wheel is conveyed fromit into said basin, the bottom of which -is provided with a lurality ofnozzles 26 through and from which the oil drips upon those membersof thepump driving gear that must be lubricated.

I wish it to be understood that the pump liquid container and saidcylinder respectively a driving motor coupled to said pump and alsoarranged in said chamber substanforming chambers beneath the worln'ngtable,

a pump arranged in one of said chambers, pipe connection within saidchamber between said ump, said liquid container and said cylin errespectively, a driving motor coupled to said pump and also arranged insaid chamber, electric switching members arranged in said secondchamber, and covers for closing up said chambers.

In testimony whereof I have aflixed my signature.

HERMANN BRANDENBURG.

may have more than three pistons. Owing to the use of a pump havingpreferably at least three pistons the liquid under pressure ispractically uniformly conveyed so that the iston 5 and the members 6 and7 are lifte with practically uniform speed.

In the chamber 1 of the frame of the press are housed the electricswitching'members 27 required for the proper actuation and operation ofthe motor, etc.

rangement and combination of parts, as described and shown by way ofexample, the space necessitated by the dimensions of the press,including its frame and it's table, in

orizontal and in vertical direction, is completely utilized. The pressitself and the means for actuatin and operating it (comprising the pump,t e electromotor, and the switchlng means) form a completelyselfcontained structure.

I claim:

1. A hydraulic press for the manufacture I V of stereotype matrices,comprising in combination a frame having a middle part and two sideparts, the middle part of the frame forming a support, a c linder onsaid support, a piston in said cy 'nder and a working table connectedwith said piston, a liquid container surrounding said cylinder, the two1 side parts of said frame forming chambers beneath the working table, apump arranged in one of said chambers, pipe connection within saidchamber between said pump, said It will be obvious that, owing to theor;

